Wrench.



J. L. BROOKS.

WRENCH.

APPLICATION FILED APR. 3. 1915.

1,166,429. Patented .Ian. 4, 1916.

Swami/oz JL .Broofrs.

UNITED. STATES PATENT OFFICE.

JAMES L. BROOKS, or DOUGLAS, ARIZONA, AssIGNoRor ONE-HALF momnwrsM..,BALI|,

or DOUGLAS,.ARIZON.A..

RENCH. 7

Specification of Letters Pat'ent.

Patented Jan. l, 1916.

Application filed .A-pril 3, 19.115. seriamv 0. 18,986.

To all whom it may concern:

Be it known that I, JAMns L. BROOKS, a

citizen of the United States of America, residing at Douglas, in thecounty of Cochise and State of Arizona, have invented certain new anduseful Improvements in renches, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to wrenches and has for its object the productionof a simple and efficient wrench, whereby the jaw thereof may be easilyswung for the purpose of allowing the same to be adjusted to the desiredposition upon the shank of the wrench.

Another object of this invention is the production of a simple andefiicient means for mounting the spring in engagement with the pawl,whereby the pawl will be auto matically thrown into engagement with theratchet teeth upon the inner face of the shank of the wrench in order tohold the adjustable jaw of the pawl in a set position.

lVith these and other objects in view this invention consists of certainnovel combinations, constructions, and arrangements of parts as will behereinafter fully described and claimed.

In the accompanying drawing: Figure 1 is a side elevation of the wrench.Fig. 2 is a side elevation of the shank of the wrench showing the yokeplate in cross section. Fig. 3 is an edge view looking at the front edgeof a portion of the adjustable jaw or pawl. Fig. 4 is a perspective Viewof the adjustable jaw or pawl. Fig. 5 is a detail perspective view ofthe yoke plate. Fig. 6 is a section taken on line 6-6, of Fig. 1.

By referring to the drawing it will be seen that 1 designates the shankof the wrench which is provided with the handles 2. The upper end of theshank 1 is provided with an overhanging stationary jaw 3, and the innerface of the shank 1 is provided with a series of teeth 4 formed thereon.

A yoke plate 5 which is substantially U- shaped fits around the shank 1,and an adjustable jaw or pawl 6 is pivotally secured between the outerends of the yoke plate 5 by means of a pivot bolt 7. The adjustable jaw6 is substantially V-shaped and is provided upon one side thereof with aseries of teeth 8 as illustrated clearly in Figs. 2 and 4:. A coilspring 9 is mounted upon the pivot pin 7 and fits within the socket 10formed:initheia'djnstablexjaw 6;: Thesocket i.

10 communicates with a laterally projecting pocket 11, within wvhiohpoc-ket 11 works -theprojecting end 12 of the coil spring 9. Theprojecting end 12 of the coil spring 9 pro ects through the aperture 13formed in one end of the plate 5 and is bent rearwardly so as to fitsnugly within the socket 14: formed in the outer face of the plate 5 soas to hold the laterally bent end 15 of the sprlng out of engagementwith foreign objects. The other end 16 of the spring 9 fits in a pocket17 formed in the adjustable jaw 6, which pocket is provided with anarrow entrance mouth 18 and terminates in an enlarged socket portion asclearly illustrated in Figs. 3 and 4 of the drawings for the purpose ofallowing theend 16 of the spring to conveniently fit within the socket17 and in this manner hold the spring 9 in its proper position. that thespring 9 is adapted to normally force the ratchet teeth 8 upon the jaw 6in engagement with the teeth formed upon the inner face of the shank 1.

From the foregoing description it will be seen that a very simple andefficient adjustable wrench has been produced, whereby the jaw may bepositioned in any desired or convenient place upon the shank and held inthis position to permit the tightening of a bolt, nut or the like.

It should be understood 7 Special attention is called to Fig. 2, and

it will be seen that the adjustable jaw 6 is provided with a nose 19 soas to permit the outer end 20 of the jaw to be moved upwardly by meansof the finger of the operator, and in this manner cause the teeth of theadjustable jaw to be drawn out of engagement with the teeth of theshank 1. This is made possible owing to the fact that the jaw 6 may rockupon the rounded nose I Copies of this patent may be obtained for thefree end of said coil spring, and the free end of said coil spring beingadapted to force said adjustable jaw into firm engagement with saidshank.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

JAMES L. BROOKS.

\Vitnesses:

J. J. WOOD, THOMAS SULLIVAN.

five cents each, by addressing the Commissioner of Patents, Washington,D. G.

